Dump-car.



c.' H. CLARK. i

DUMP OAR.

y APPLICATION FILED PEB. 17,` 1910. 1,018,165.

4Patented Feb. 20, 1,912.

2,5' FIGJ.

, C H. CLARK.v

DUMP GAR. l

APPLIOATION FILED FEB. 17, 1910.

5. n0 u. .QN 1 9 8 s, m s m, 5 E 1 1 .Q QN www 66E. uw. w @a e. H.CLARK.

DUMP UAB. APPLIUATION FILED TEIL A17, 1910.

Patented Feb. 20, 1912 es l f ma l 'A \\\\\\\\\\\`7/l z fix/1111111, 1-*

y ffl/f4.

C. H. CLARK.

DUMP CAR.

APPLIOATION FILED P21117, 1910.

Patented Feb.20,1912.

4 SHEETS-'SHEET 4. V,

FIGJ5.

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'UNiTEn-.sTATEs )PATENTV OFFICE."

CHARLES H.-.cLAnx, or cnAr'roN; PENNSYLVANIA, AssIGNon' To CLARK CAB,com- \PANY, or PITTSBURGH, PENNSYLVANIA, A CORPORATION or NEW JERSEY.

" DUMP-eAn.

f Specication of Letters Patent. Application led February 17, 1910.Serial No. 544,394.

Patented Feb. 20,1912.

To all 'whom it may'concern:

Be it known' 'that I, CHAnI-.ns H. CLARK, a resident of Grafton, in thecounty of Allegheny and State of Pennsylvania, have invented cert-ainnew and useful Improvements in'Dump-Cars, of which the following is aspecification.

One object ofrthis invention is to provlde for operating the doors of adump car either by hand or by air power, the' arrangementbeing suclrthat the two operating means may be used interchangeably and withoiiteither means interfering with or retarding the other.

A further purpose is to so connect the operating means with each door asto avoid twistingr and other strains which tend to distort'u'the doorsand prevent them from closing tightly. In the present embodiment thedoors Vopen outwardly, beingr of the bodily movable. type, with theiropposite ends connected to and receiving the same amount of force 'fromthe operating mechanism, relieving them of all torsional strains.

Still a further purpose is to provide loclring mechanism of improvedconstruction which may be operated'at either side of the car forreleasing both doors.

In the accompanying drawings, Figure 1- is a 'sectional end elevation of.a dump ear embodying. the improvements, the same being taken -outsidethebody bolster, and Figll 2 is asimilar sectional elevation takeninside the bolster on line 2-2 of Fig. 3.v Fig. 3 is a sectional sideelevation on line 3-,3 of Fig. 2, the doors being closed. Fig. 4 is a'sectional plan of one side'of the car, taken on i with the latchesdisengaged. Figs. 8 to 11,

inclusive, are sectional details of the latches, taken on line a-a ofFig. 7, illustrating their dilferent relative positions when interloekedand when moving together or when. separat-ing, and Fig. 11 is a similarview on line L of Fig. 6, with the latches fully intel-locked. Fig. 12isa detail of one of the latches. Figs. 13, 14 and 15 are sect-ions ofthe air controlling valve, Fig. 18 showing the valve'in normal orneutral position;

Fig. 14 when turned to admit air into one en d of the cylinder; andFig.' 15 when turned to admit air into the opposite end of the cylinder.The. structures to which the present invent-ion is direc ed areillustrated in connec- 'tion with the d r mechanism shown in LettersPatent granted to me November 9, 1909, No. 939,588, but it will be'understood'that the novel subject. matter herein disclosed may beapplied to doors .of varioustypes.

Referring to the drawings, 2' are the sloping side sheets and 3 thesloping end sheets of the hopper. l

4 is the bolster, and 5 the draft sills. The

bodily movable doors 6,' disposed longi portions of the door-ends 7travel on the track-like supports 13 securedto the draft sills. Theconstruction thus far described is the'same as in my above mentionedLetters Patent.

Extending longitudinally f the hopper at 4each side of the car outwardlyfrom and preferably in a plane above stub shafts 9 aref shafts 14 whichare journaled in bearings 15 secured to holsters 4, also in suitablebearings 15 on the diaphragms 2. Two cranlr arms 16 on each of theseshafts areconnected by links 17- to the trunnions-8 on the door ends towhich arms 8 of the stub shafts 9 are secured. Thesesupplemental shaftsl4'transmitthe same forceA to both ends ofthe doors, resistingdistorting strains and maintaining the doors so alined that they alwaysclose tight-ly together the entire length ot their lower edges. y

Shafts 14 are utilized for moving the doors'by hand, being of squaresection their entire length, so that a wrench may be applied 'at anypoint on either shaft for either opening or closing both doors. Alltorsional strains are absorbed by the 'shafts during -such operation,and the same is also true when operating the doors by air power,presently lto .be described. With the doors thus protectedv theiretiiciency and durability 'is iinA greatly increased, and they moveaccurately and easily to and from closed position.

In some services means actuated by it is desirable to pro-vide fluidpressure in additionl to the hand means for operating the'doors. Airunder pressure is obtained for this purpose by suitable connection with,an auxiliary reservoir of the air brake equipment, or

with a train line,

not shown. While Iam not the first to utilize the brake air for thispurpose, I believe I am the first to do so in' ofbolsters 4 wit verselyof the car,

of the doors. As here its axis extending transand with piston 21 thereofhaving its rod 22 connected to crank arm 23 secured to one of stubshafts 9.- 24 is the controlling valve and secured thereto is arm 25projecting in opposite directions, with links 2G extending to the handlevers ster adjacent oppositesi es of the. car, so that the valve may bethrown from either side at the convenienceof the operator.

2S is the 4casing in. which valve 24 operates.

from the arm` extremities 27 sup orted by the hol- While the valve andcasing may be variously constructed, a desi rable embodiment thereof isshown in detail in Figs. 173, 14 and 15.

l Referring thereto casing 28 has at one side-say its upper side-theported pipe connection 29 through which air is admitted from a reservoiror train line, not shown. At the bottom of the casing is outlet orexhaust 30. ,Xt opposite sides of the casing are ports 31 from whichpipes 31 'extendto opposite ends of cylinder 20. The valve 24 is formedwith tw lar form, with the separated by perip o like ports 32 ofirreguupper ends of said ports hcral part 33 on the valve which fullycovers inlet 29 when the valve is in normal or shut-ofiI position, andwith the lower' portions of ports 32 yso widened through the valve 34,as to place the opposite cylinder ports 31 periphery, as indicated at inregister with exhaust 30. The result is that with both en'ds of thecylinder opento the exhaust when the air mechanism 1s 1nactive, piston2l`works easily in the cylinder in response to the movement transmittedthrough rod 22 and crank 23 without hin-v drance fx-om either vacuum orair cushions, such as would occur 1n the cylinder 1f both ends thereofwere not fully vented. Thus,`

when thedoors open the piston movesfreely, and thev same is true whenthe doors vare closed h v hand or similarly'shaken to dislodge 4materialsticking in the car. But the air power mechanism is in constantreadiness for use, it being o valve by one or t nly .necessary to turnVthe he other hand levers 27,

'placing the valve as shown iii-Fig. 14, or in out. y

v'As here embodied, the locking `mechanism consists of two `latch stems35 rotatably mounted in brackets 36 secured to the under-sides of thedoors, each stem being' preferably in aplane parallel to' the door. Theinner lower ends of the latches project beyond the lowermeeting' edgesof the doors, so that when the latter are closed the latches overlap andtheir hook-like extremities 37 playne on the other and firmly interlockwhen the doors are fully closed. A

coiled spring38 oneach latch holds the' same normally Ain the positionit occupies when the latches are interlocked, as shown in Fig. 16, andopposes movement of the latchesout of this position. The movement ofeach latch in opposition toits spring 3S may-be limitedl by boss 39secured `to the latch stem j ust above hook37 and cut away at.39. toafford limited movement with re-.

lation to lug 40 on bracket 36.

, In order that either latch when free to turn may be deflected by andpass the `other latch `as the doorsI open and close, the inner sidesurfaces vof hook extremities 37 are lshaped to `play one on the other,causing the releasedlatch to turn when approaching as well as whenmoving away from the other latch. 'The outer portions of these surfaces,the portions that first engage when the doors are closing, are shaped toform the complementary oblique faces 41 which produce a wedging action,turning laterally the loosenedlatch against the pull of spring 38, as inEigs. 9 and 10. Inwardly from faces 41, the latch extremities are formedwith complementary oblique faces 42, disposed reversely .to faces 41,with the result that after faces 41 pass each other the loose latch, inresponse to the pull of spring 38, turns intoi locking engagement withthe fixed latch, with faces 42 bearing against eachother, as in Figs. 6and 1l. The angle of faces 42 is preferably less than the angle offriction, sothat with arm 43 of either latch raised, as in Fig.' 7, thereleased latch is free to turn, and the doors may move apart. When thelatches are interlocked by the engagement of-faces 42and it is desired'to secure the doors, the eccentric arn'i 43, pivoted to stem .35 andbearing against the outer end of bracket 36, is turned downward from theposition shown in l1` ig. 7 t0 that shownin Fig. 6 and into the forkedvcatch or holder 44, secured to the side ofthe door. This slightbackward oroutward released latch moves or ilongitudinal'lmovement ofthe' latch takes u 'all slack-and" holds lthe doors t will`be-inderdnodthe latch mechanis'm is of the saine construction on both .-dors andthat thedoors may released again locked by manipul ing either latch,the'latch not being mani ulated being held fixed by its arm 43, with thesurfaced hook-like extremityl of suchlatcb 0pyeratingas a holdingdeviceover which 'the plays during the first portion of the openingmovement of the doors and the 'final portion of the closing movement. Ofcourse, both latches may be released, but vsuch double manipulation isunnecessary as it is one of the characteristics of the invention thatthe mechanism `may bev operated interchangeably through either of thelatches.

-The Wedging -together of the two latches upon turning down theeccentricarm of the latch that has beenreleased, as above de` scribed, is mosteffective in imparting the f final and complete closing movement,holding the doors thus tightly vclosed until released by looseningeither latch. v And with the latches midway the ends of the doors theirmeeting edges are held tightly together from one end to the other.

I claim:

A 1. The combinationlof a door for a dump car, fluid pressure means foropening and closing the door, and mechanism for locking and releasin thedoor actuated independently of the uid pressure mechanism.'

-2..The combination of a door for a dump car, fluid ressure means andhand means operative interchangeably for opening' and closing the door,and door locking andreleasing mechanism operative independently of thedoor moving means.

3. The combination of a. door for a dump car, fluid means and hand meansoperative interchangeably for opening and closing the door, and handoperated door locking means.-

L The combination of a bodily movable door for a dump car, fluidpressure meansfor opening and closing the door, and mechanism for lockinand releasing the door' "movable indepen ently of the door movingmeans..

5. The combination of oppositely moving doors for a dump-car closingtogether at their inner edges, fluid pressure means and 'hand meansoperative interchangeably for ,moving the doors, and mechanism forlocking and releasing the doors operative independently of the doormoving means.

6. The combination of opposite bodily movable doors for a dump carclosing together attheir inner edges, fluid pressure door actuatingmeans, and mechanism for locking 'and .releasing the doors operativeindependently of the door moving means.

.coope shafts, mounted on means normally out 7. The combination ofopposite doors for a'dump car closing together at their inner edges,fluid pressure 'door actuating means, rating wit-h either latch adaptedto be deflected by the other latch-when the doors move to and fromclosed position, and latch locking means. f

8. The combination of opposite bodily movabledoors for a dump carclosing-together at means and hand means operative interchangeably formoving the doors, coperating latches carried by the doors with eitherlatch adapted to be deflected by the other latch when the doors move toand from -closed position, and latch locking means.

9. The combination of a dump car, bodily movable doors for the bottomopening Ithere- 'of, separate devices for each door pivoted taining saidmeans normally out of position to retard the movement o f the door,Whereby the fluid and said other means maybe used' interchangeably andthe said other means used wit out being retarded by the fluid means. Y

12. The combination of a door for a. dump car; and twoi mechanisms foi'moving the door operative interchangeably at any position of the doorfor imparting either opening orclosing movement thereto.

- 13. lna dump car, the combination of a door having upturned ends, ashaft mounted on the car and extending `longitudinally of the door withcranks on the shaft connected to the upturned door ends.

14. The combination of a` dump car,'bodily movable doors for the bottomo ening thereof, tracks, wheels mounted on adapted to roll on thetracks, devicespivoted to fixed portions ofthe car and to portions ofthe doors for raising and lowering said door portions as the doors movefrom and toward closed positiomshafts .extending longitudinally of thedoorsone shaft for each door, and cranks on the shafts-connected to thedoors.

latches carried byv the doors' their inner edges, fluid pressure -4 thecar and extending los ilo

e doors and 15.v The combination of a door for a dump I car, fluidpressure means and means other than the fluid pressure means operatn'einto prevent said -means from movement of the door when actuated bysaidterchangeably for actuating the door, and mechanism operating to render,the fluid pressure 4retar ng the other operating means,

The combination of a door 4for a dump cai', a power cylinder, a iston inthe cylinder operatively connected) mechanism connected to opposite endsof the cylinder and' provided with' an'inlet .and an exhaust with bothends of the vcylinder openA pistonto the exhaust when the I cylinder'and are inoperative, andmeans other than the cylinder and piston foractuating' the door.

17. The combination of bodily mova ble doors for a dump -car,crai1kshaftsone for each end of eachA door-with the cranks ofA saidshaftsconneeted to' the doors,eonnect ing means causing the doors tomove 1n unison,-

said shafts connected to the doors, fconnecting means `causing the doorsto move in unison, a crank arm on one ofsaidsha-fts, a

power cylinder and piston with the piston connected to said crank arm,valve mechanism for the cylinder, and shafts extending longitudinally ofthe doors with cranks on the shafts connected to the doors.l

19. Opposite doors for a dump latches mounted on the doors and deflectedby each other. 20. Doors for a dump car, and independently movable.cooperating latchesdeflected by the movement o-.the doors.

21. Doors for a dump car, and independently movableinterlocking latchesmoved to and from position for Yinterlocking by the movement ofthedoors.

22. Doors for a dump the doors to move in unison, ently movablecooperating latches moved by the doors into and out ofposition forcooperating.

23. Doorsfor a dump ear, the doors to move in unison,

car, means causing and independlocking. 24. Doors for a dump car,`meaiiscausing the doors to move in unison,

and interlocking latches movably mounted on the doors and moved by thedoors into and out of position for interlocking.

25. A movable latch. for a' dump car, means opposing movement of thelatch from locking position, a holding device engage by the movablelatch, the holding device and latch adapted to interlock` and havingsurmeans operative and also operating,

. surfaces, and

to the door, valve f a crank arni on'one of saidA shafts, a., powercylinder and piston with the pistonl and valve car, and,

and independadvancing means causing faces whieh'engage each other movestoward Kclosed position, surfaces having two faces with one o facesoperating to deflect the latchduring the first portion of the engagementof said the plane of the other face permitting the latch to interlockholding device.

26. A1 latch for a rotary movement and like e'tremity, means opposingone ofv said dump car door 'having provided with a hookmovement latchwith said device andthe hook extremity of the latch having engagingsurfaces one moving over the other as the door closes, one 'of saidsurfaces havin two faces, one of said faces operatind to turn thelatchwhen tli'e latch and hol ing device first engage each other,`and theotlieriface' of said latch to interlock with the holding device.

. 27. A latch .for a l dump Acar door having limited rotary movement andprovided with a locking extremity, means for turning the latch toward,locking position, a holding device with,A which the having surfaceswhich enas the door moves toward latch extremity gage each other closedposition, oneot said surfaces having twofaees, one face operating todeflect the latch during the tirst portion of engagement of saidsurfaces, and the other face 'of said surface permitting the latch' toturn toward locking position and interlock uitlitheholding device". Y j

2S. rotatable latch for a dui'iip car door fthe..

surface permitting the -as the door" i vo'fithe latch fro'nilockingposition, a holding l device engaged. by the latch extremity is adaptedto interlock, the hol ding device' and' having limited independentmovement in the direction i'n which' the dooi moves and formed with alocking extremity, means opposing rotation of the latch, a holdingdcvice with which the extremity ofthe latch interlocks, the holdingvdevice and\latch extremity having surfaces which engage each other asthe door moves toward closed position, one 'of the surfaces havingt\vo'faces one face in advance ot the -otheiL-with the face operating totui-n the' latch face permitting the latch to normal position, the planeo the latch and holdand the other 'move toward Asaid other face' causinging device to tightly interlock when the llatch is `-movedlongitudinally, means for moving the latch 'lon, f itudinally,l andmeans for holding thev latch against rotation.

29. Interlocking latches movably mounted on the oppositely moving doorsof a dump car,.` means opposing` movement'. of the 'latches o utV oflocking position, the latches having surfaces the dooisixiiovesurfaces'formed with which operate to detlect one or toward closed position, saidcomplementary which engage each otheras faces' the otherof the latchesas the doors `movatoward cach other, and saidzeng'g'ing surfaces havingposition, said Surface@ having com- Vhwy advancing which @param v or;

'n'leu'l'mjsf faces penn o lachcb upon 'he com @sans 01? moving y 'n a,dircctm,

trennt uch @bw u parmi?, the

upon fue Y Y y y movable Rich :1 dump ozu' wktmg om' hav ons which Which l hanf? means 0p- K the (E mi',

' son? QW 'fms when. spass, and. fu.

561V@ miel i my si CLS

